China is criticizing a short visit by Taiwan's president to the United States, saying it violates the "one-China" principle.
Foreign ministry spokesman Geng Shuang urged the U.S. on Friday to cease official exchanges with Taiwan and not allow stopovers by President Tsai Ing-wen.
Tsai is already in New York on a two-night stay en route to an official visit to four Caribbean nations. She was scheduled to deliver a speech to a U.S.-Taiwan business summit on Friday and attend a dinner with members of the Taiwanese-American community.
The United States recognizes Beijing as the government of China, but provides military and other support to Taiwan. The self-governing island split from China during a civil war in 1949.